var Base64=
{
	_keyStr:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
	encode:function(e){
		var t="";
		var n,r,i,s,o,u,a;
		var f=0;
		e=Base64._utf8_encode(e);
		while(f<e.length){
			n=e.charCodeAt(f++);
			r=e.charCodeAt(f++);
			i=e.charCodeAt(f++);
			s=n>>2;
			o=(n&3)<<4|r>>4;
			u=(r&15)<<2|i>>6;
			a=i&63;
			if(isNaN(r)){
				u=a=64
			}else if(isNaN(i)){
				a=64
			}
			t=t+this._keyStr.charAt(s)+this._keyStr.charAt(o)+this._keyStr.charAt(u)+this._keyStr.charAt(a)
		}
		return t
	},
	decode:function(e){
		var t="";
		var n,r,i;
		var s,o,u,a;
		var f=0;
		e=e.replace(/[^A-Za-z0-9+/=]/g,"");
		while(f<e.length){
			s=this._keyStr.indexOf(e.charAt(f++));
			o=this._keyStr.indexOf(e.charAt(f++));
			u=this._keyStr.indexOf(e.charAt(f++));
			a=this._keyStr.indexOf(e.charAt(f++));
			n=s<<2|o>>4;
			r=(o&15)<<4|u>>2;
			i=(u&3)<<6|a;
			t=t+String.fromCharCode(n);
			if(u!=64){
				t=t+String.fromCharCode(r)
			}
			if(a!=64){
				t=t+String.fromCharCode(i)
			}
		}
		t=Base64._utf8_decode(t);
		return t
	},
	_utf8_encode:function(e){
		e=e.replace(/rn/g,"n");
		var t="";
		for(var n=0;n<e.length;n++){
			var r=e.charCodeAt(n);
			if(r<128){
				t+=String.fromCharCode(r)
			}else if(r>127&&r<2048){
				t+=String.fromCharCode(r>>6|192);
				t+=String.fromCharCode(r&63|128)
			}else{
				t+=String.fromCharCode(r>>12|224);
				t+=String.fromCharCode(r>>6&63|128);
				t+=String.fromCharCode(r&63|128)
			}
		}
		return t
	},
	_utf8_decode:function(e){
		var t="";
		var n=0;
		var r=c1=c2=0;
		while(n<e.length){
			r=e.charCodeAt(n);
			if(r<128){
				t+=String.fromCharCode(r);
				n++
			}else if(r>191&&r<224){
				c2=e.charCodeAt(n+1);
				t+=String.fromCharCode((r&31)<<6|c2&63);
				n+=2
			}else{
				c2=e.charCodeAt(n+1);
				c3=e.charCodeAt(n+2);
				t+=String.fromCharCode((r&15)<<12|(c2&63)<<6|c3&63);
				n+=3
			}
		}
		return t
	}
};
